Abstract: A commutator includes a first body and a second body which are separately made of electrically insulating material, a plurality of commutator segments fixed on an outer surface of the first body and a plurality of commutator terminals. The first body is a hollow cylinder with two opposite ends. Each terminal has a contact area for contacting a corresponding one of the commutator segments. The second body has a base and a ring wall extending from the base, and one end of the first body is received in a space defined by the base and the ring wall, with the contact area of each terminal being in tight contact with the corresponding commutator segment at the inner side of the ring wall.

Abstract: A fan module (1) includes a support structure (2), a motor (6), and an impeller (12). The support structure (2) includes an outer frame (3), an inner seat (5), and spokes (4) connecting the outer frame (3) to the inner seat (5). The motor (6) includes a stator (7) fixed to the inner seat (5), a rotor (8) rotatably mounted to the stator (7), a heat sink (11) at one end of the stator (7), and a control circuit (9) in thermal contact with the heat sink (11). The impeller (12) includes a hub (13) having a front wall (13a), a side wall (13b) spaced from the front wall (13a), and inner vanes (17) extending from the side wall (13b) and connected to the front wall (13a). Top ends of two adjacent inner vanes (17) are spaced from each other with an intake opening (17c) defined therebetween.

Abstract: An electrical contactor has a first terminal having a fixed member with at least one fixed electrical contact, a second terminal, and a busbar connected to the second terminal. Two conductive movable arms are connected to the busbar and have a contact thereon. One arm is biased-closed to contact the fixed electrical contact in the absence of a separating force, and the other arm is biased-open to be spaced away from the fixed electrical contact in the absence of a closing force. The first and second movable arms and the busbar are arranged so that, when the contacts close, contra-flowing current urges the movable arms towards the fixed member to increase a force between the contacts.

Abstract: An electronic device is protected from unauthorized access by use of a security wrap which comprises at least a substrate, a security screen, a layer of adhesive and decoy pattern. The security screen is disposed over one side of the substrate and includes a pair of screen terminals and a conductive path between the pair of screen terminals. The layer of adhesive bonds the first side of the substrate to the electronic component with the security screen sandwiched there between. The decoy pattern is at least partially impervious to X-ray and overlays said security screen.

Abstract: An electrical contactor has a first terminal having a first fixed contact; a second terminal having a second fixed contact; a first electrically-conductive movable arm in electrical communication with the first terminal and having a first movable contact thereon; a second electrically-conductive movable arm in electrical communication with the second terminal and having a second movable contact thereon, counter-opposed to the first moveable arm; and an actuator for moving the first and second moveable arms in opposing directions. The first moveable contact and the second fixed contact form a primary contact set, and the second moveable contact and the first fixed contact form a secondary contact set, first and second moveable arms thereby forming a current-sharing arm pair between first and second terminals.

Abstract: An electric motor has a rotor and a stator. The stator has an endcap with two brush assemblies, two brush brackets for holding the brush assemblies and two electrical terminals. Each brush assembly is detachably mounted to its brush bracket and has a brush holder, a brush slidably received in the brush holder, a spring for urging the brush out of the brush holder, and a conductive member electrically connecting the brush with a corresponding electrical terminal via a resilient releasable connection.

Abstract: A hybrid torque transmission mechanism (10) comprises a torque receiving component (30) and a torque output component (50) connected to each other, so that they are able to rotate synchronously. The torque receiving component (30) is configured to receive power from an electric motor or gearbox (70), which is then transferred to the torque output component (50), which may contain an output gear (58) to transfer power to an application. The torque receiving component (30) is fabricated using powder metallurgy to achieve sufficient tolerance. The torque output component (50) is fabricated using metal injection molding for high toughness.

Abstract: A solenoid valve has a valve body with first and second ports. A bobbin is mounted to the valve body. A winding is wound on the bobbin. A stator is fitted to one end of a hole through the bobbin and defines a third port therein. A plunger is slidably fitted to the hole and movable between a normal position and an energized position. Two plugs are installed at respective ends of the plunger and arranged to selectively close the first and third ports. A flux return device is fixed to the stator and the bobbin. A spring returns the plunger from the energized position, where the plunger closes the third port and the first and second ports communicate with each other via the hole in the bobbin, to the normal position, where the plunger closes the first port and the second and third ports communicate with each.

Abstract: An electrical switch for mounting into a surface of a component, has at least one shoulder region to be brought closer to this surface and which has at least one seal, which is assigned to an opening in the surface. The shoulder region has at least one region with at least one assigned indicator component, wherein this assignment is changed in terms of position in the case of complete sealing action of the seal compared to an incomplete sealing action of the seal.

Abstract: A motor stator includes a plurality of separate core segments, a plurality of coils, and a fixing ring. Each core segment includes a yoke and a tooth extending from the yoke. The yokes are connected to form a substantially circular core, with the teeth extending inwards. Each coil is wound around a corresponding tooth. The fixing ring is fixed to the outer surface of the core.

Abstract: A security assembly for protecting a device including first and second security wraps fitted to the device. The first security wrap covers a first area of the device. The second security wrap partially overlaps the first security wrap and covers a second area of the device. Each of the first and second security wraps has a security screen having a pair of screen terminals and a conductive track extending between the screen terminals A conductive structure is disposed in an overlapping area between the first and second security Wraps and coupled to the first screen terminals of the first security screen and to the second screen terminals of the second security screen.

Abstract: A linear actuator has a stator with two stator coils and pole plates forming stator poles. A rotor is rotatably mounted to interact with the stator poles. The rotor has a hollow cup shaped permanent magnet fitted to a screw shaft. An output shaft, which is co-axial with the rotor, is driven by the rotor through a screw connection. The rotor is supported by a single rotary bearing located within the magnet, axially between axial ends of the permanent magnet.

Abstract: A motor for a cooling fan of a vehicle has a rotor including a driving shaft mounted so as to be rotatable in a stator and a bowl-shaped metal case, having a lateral skirt wall which extends around the stator, and having a bottom wall in which there is constructed a tubular fixing formation through which the shaft extends and which is fixed to the shaft. The tubular fixing formation of the rotor case has an internal diameter which is greater than the diameter of the driving shaft. The motor further has an intermediate insert including a tubular portion which is fixed to the shaft and on which there is fixed the tubular formation of the rotor case, and a transverse connecting portion which extends adjacent to the external surface of the bottom wall of the rotor case, and which is connected or connectable to the impeller.

Abstract: A stator includes a housing made of magnetically conductive material, a plurality of magnets fixed to the stator housing; and a magnet holder attached to one end of the housing for fixing the magnets to the stator housing. The magnet holder includes a body and a plurality of locking structures extending from the body. Each magnet is locked between two adjacent locking structures. A plurality of cut-outs is formed in the stator housing, and a plurality of projections is formed on the body of the magnet holder and engaged with the cut-outs. Each locking structure includes a wedge-shaped inner end inwardly abutting against respective magnets to prevent the magnets from moving inwardly.

Abstract: A casing configured for receiving a motor. The motor includes a shaft, two end plates substantially perpendicular to the shaft, and two bosses respectively protruding from the two end plates along the shaft. The casing includes two abutting plates. Each abutting plate includes an arcuate resisting surface that substantially faces the other abutting plate for abutting against a corresponding end plate. The distance between the two resisting surfaces increases from the middle thereof to the side thereof. Each abutting plate comprises a notch formed in an edge thereof and extending along the middle of the corresponding resisting surface for receiving a corresponding boss.

Abstract: An electric motor has a stator, a rotor, two motor terminals and a filter circuit for suppressing electromagnetic interference. The filter circuit includes a flexible circuit assembly having a FPCB. Multiple filter elements are mounted to the FPCB. There are less connection points between the filter circuit and the motor terminals, which leads to higher reliability of the motor.

Abstract: An electromagnetic drive mechanism (10) comprises a rotor (50) configured to rotate within a stator (30). The rotor (50) and stator (30) have multiple poles (56, 36), wherein each pole comprises a radial inner portion (564, 362) and a radial outer portion (562, 364). The radial inner portions (564, 362) and radial outer portions (562, 364) of the rotor (50) and stator (30) have different heights, forming a step (566, 366) between the radial inner and outer portions of the rotor (50) and stator (30). This configuration allows for overlapping radial surfaces in addition to overlapping axial surfaces during operation of the drive mechanism (10), thereby increasing the total overlap area and thus the reluctance torque, and potentially improving response speed while allowing for a more compact device (10).

Abstract: A drive unit includes an electric motor, a worm shaft coupled to the motor, a worm gear engaging with the worm shaft, and an output shaft connected to the worm gear. The motor has a motor shaft on which the worm shaft is fixed. The worm shaft is made of plastic. The drive unit further includes a metallic sleeve press fitted to the motor shaft. An outer profile of the sleeve is non-circular. A correspondingly shaped receiving hole is formed in the worm shaft to receive the sleeve. The sleeve rotates with the motor shaft and drives the worm shaft.

Abstract: A haptic feedback device (20, 20?, 20?) comprises a stationary frame (40); a carrier (42) configured for at least one degree of motion relative to the stationary frame; a user interface (44) mounted on the carrier and configured to receive a human impulse; a set (46) of pole pieces; and, a suspension system (48). The haptic actuator (46) comprises a first pole piece (80) mounted to the stationary frame (40); a second pole piece (82) mounted to the carrier (42); and, an electromagnetic coil (84) carried by one of the first pole piece and the second pole piece. The first pole piece and the second pole piece are separately mounted to define an air gap (90) therebetween in a first direction when the electromagnetic coil is not energized, the first direction corresponding to the at least one degree of motion. The suspension system (48) is mechanically separated from both the first pole piece (80) and the second pole piece (92).

Abstract: Controller for a three-phase brushless D.C. motor has a full bridge circuit and an electronic control unit (ECU). The full bridge circuit has three branches each with switches connected to the motor windings. The switches are driven by signals from the ECU. The drive signals are arranged in two sets of three signals. The two sets are offset by 180 electrical degrees. The drive signals of each set are offset by 120 electrical degrees and each have an active portion, alternating with an inactive portion. The active portion includes an initial interval of pulsed activation, an intermediate interval of continuous activation, and a final interval of pulsed activation. The active portion of the drive signals is greater than 120 electrical degrees, with each initial interval of pulsed activation of a switch overlapping the final interval of the previously activated switch.